// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/app_list/app_list_folder_item.h"

#include "base/guid.h"
#include "ui/app_list/app_list_constants.h"
#include "ui/app_list/app_list_item_list.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/image/image_skia.h"

namespace app_list {

AppListFolderItem::AppListFolderItem(const std::string& id,
    FolderType folder_type)
    : AppListItem(id)
    , folder_type_(folder_type)
    , item_list_(new AppListItemList)
    , folder_image_(item_list_.get())
{
    folder_image_.AddObserver(this);
}

AppListFolderItem::~AppListFolderItem()
{
    folder_image_.RemoveObserver(this);
}

const gfx::ImageSkia& AppListFolderItem::GetTopIcon(size_t item_index)
{
    return folder_image_.GetTopIcon(item_index);
}

gfx::Rect AppListFolderItem::GetTargetIconRectInFolderForItem(
    AppListItem* item,
    const gfx::Rect& folder_icon_bounds)
{
    return folder_image_.GetTargetIconRectInFolderForItem(item,
        folder_icon_bounds);
}

void AppListFolderItem::Activate(int event_flags)
{
    // Folder handling is implemented by the View, so do nothing.
}

// static
const char AppListFolderItem::kItemType[] = "FolderItem";

const char* AppListFolderItem::GetItemType() const
{
    return AppListFolderItem::kItemType;
}

ui::MenuModel* AppListFolderItem::GetContextMenuModel()
{
    // TODO(stevenjb/jennyz): Implement.
    return NULL;
}

AppListItem* AppListFolderItem::FindChildItem(const std::string& id)
{
    return item_list_->FindItem(id);
}

size_t AppListFolderItem::ChildItemCount() const
{
    return item_list_->item_count();
}

void AppListFolderItem::OnExtensionPreferenceChanged()
{
    for (size_t i = 0; i < item_list_->item_count(); ++i)
        item_list_->item_at(i)->OnExtensionPreferenceChanged();
}

bool AppListFolderItem::CompareForTest(const AppListItem* other) const
{
    if (!AppListItem::CompareForTest(other))
        return false;
    const AppListFolderItem* other_folder = static_cast<const AppListFolderItem*>(other);
    if (other_folder->item_list()->item_count() != item_list_->item_count())
        return false;
    for (size_t i = 0; i < item_list_->item_count(); ++i) {
        if (!item_list()->item_at(i)->CompareForTest(
                other_folder->item_list()->item_at(i)))
            return false;
    }
    return true;
}

std::string AppListFolderItem::GenerateId()
{
    return base::GenerateGUID();
}

void AppListFolderItem::OnFolderImageUpdated()
{
    SetIcon(folder_image_.icon());
}

} // namespace app_list
